Weft pile fabric loom



Aug. 14, 1934.

WEFT PILE FABRIC LQOM v Filed Sept. 14, 1933 Fig.1

W. B. COOPER ET AL 2 Sheets-Sheet 1 I AT7\'OF?NEY 1934. w. B. COOPER ETAL 1,970,444-

WEFI' FILE FABRIC LOOM Filed Sept. 14, 1933 2 Sheets-Sheet 2 Fig.3

// /VENTOR MaGM,

ATTORNEY Patented Aug. 14, 1934 UNITED STAT S PATENT OFFICE nix,Amsterdam, N. Y

., assignors. to Bigelow Sanford Carpet (30., Inc., Thompsonville, Conm,

a corporation of Massachusetts Application September 14, 1933, SerialNo. 889.381. llv Claims. (Cl. 139-21) nism or the wires have beensecured to a heddle or passed through eyes carried by it. These 5expedients have not only complicated the loom structure but have sloweddown the loom operation with consequentloss of output and much wear uponthe loom parts.

One of the objects of the present invention is to provide a loom forweaving weft pile fabrics wherein the means for producing the pileforming loops consists of fixed members extending from the front of theloom towards the lay reed, which, on the beat up, forces the pile weft 5over the ends of the loop forming members between the associated warpthreads, so that un der the tension of the latter portions of the pileforming weft threads are depressed towards and bound to the backingfabric.

Another important feature of the invention consists in the formation-ofa two plane fabric with a dead stuifer warp separating the two sheds andassociating the loop forming members with relation thereto, such thatthe lower edge portion of the loop forming members shall liesubstantially in the plane of the stuffer warps, so that on thesimultaneous introduction of the upper and lower weft shots the relationof the warps and the weft shots is not disturbed from 40 the intendedpurpose.

The invention and othernovel features thereof will best be made clearfrom the following description and accompanying drawings of one goodform thereof.

In the drawings:

' Fig. 1 is a perspective view of portions of the loom structure withparts broken away and having the present invention applied thereto;

Fig. 2 is a longitudinal section showing in ad dition to thatillustrated in Fig. 1, the shedding mechanism;

Fig. 3 is an enlarged detail showing the relation of the threadstructure, the loop forming members and the lay reed as the latter movesas frontwardly towards the fell of the cloth;

Fig. 4 is an enlarged section on the line 4--4 of Fig. 3;

Fig. 5 is a transverse section of the fabric showing the relation of thethreads and pile after the weft pile threads have been cut; and

Fig. 6 shows one form of needle mechanism for the simultaneousintroduction of the weft threads in the upper and lower sheds.

The loom frame 1 may beof any appropriate character for the support ofthe operating 05 parts and mounted on the loom frame for reciprocatingmovement is the lay 2 which may be operated in any usual manner from agoing part of the loom, and extending upwardly from the lay 2 is thereed 3, and as indicated, these parts may be of any usual or desiredcharacter.

As shown in the present instance of the invention, the fabric to bewoven is of the two plane type with a straight stufler warp extendingbetween the two weaves. The warps a and b consti- 15 tute the binderwarps while the warps c constitute the stuifer warps and, as indicatedmore. clearly in Fig. 2, the two binder warps a and b are operated bythe shedding mechanism which likewise may be of any usual character forthe so formation of an upper and lower shed. The stuifer c is held infixed position and may conveniently be passed through an eye in astationary heddle frame.

Extending transversely of the loom at the 5 front thereof is the breastplate 4 over which the fabric is passed as it is woven and above thebreast plate is a cross bar 5 which may be secured to the loom frame 1at each side of the loom by suitable brackets 6 through which extendsecuring bolts '7.

Secured to the under portion of the transverse bar 5 is a carrier bar 8having provisions for the support of the fixed weft loop forming membersand such carrier bar 8 may be secured to the cross bar 5 by suitablemeans such as the bolts 9 and 10.

The carrier bar is provided with a number of recesses 11 on its undersurface which are in appropriate spaced relation laterally to receivethe'front end portions of the weft loop forming members 12, one of whichis secured in each of the recesses 11. i

The construction and mounting of the weft pile loop forming members 12are of novel character in that, first, such members are rigidly securedto the carrier 8 and their free ends extend toward the lay reed, asshown, and, second, each of the loop forming members-is provided witha'downward bevel 13 while the lower surface 14 of the loop formingmembers extends rearwardly in the plane of the stuffer warps c, theresult being that when the upper and lower weft shots are introducedinto the shed by the needle mechanism, the upper weft shot will berearward of the ends of the loop forming members and between such endsand the lay reed, so that on the beat-up the reed will first force theupper weft shots over the inclined ends of the loop forming members andthen move both weft shots frontwardly towards the fell of the cloth, theupper weft shots, of course, riding on and being looped over the upperportion of the loop forming members.

The stuffer warps c divide the upper and lower sheds and by reason ofthe fact that the lower edge portion of the loop forming members is inthe plane of the stuffer warps the. lower weft shots may be moved to thefell of the cloth on the beat up without engaging or riding over theloop forming members.

The needle mechanism for simultaneously introducing the upper weft shotd and the lower weft shot e may be of any desired character but, asshown, it consists of an upper needle 15 and lower needle 16 which maybe either detachably connected to the carriage 17 or fixed thereto andthe carriage 1'7 itself is actuated by an arm 18 operated through a link19 from any convenient going part of the loom, the construction beingsuch that on operation of the needle mechanism an upper weft shot if isintroduced into the upper shed and the'lower weft shot e issimultaneously introduced into the lower shed, a condition which isindicated by dotted lines in Fig. 2, wherein the upper weft shot isindicated as being rearward of the ends of the loop forming members 12and between such ends and the reed, the effect being that on the beat upthe reed moves the upper weft shot d upwardly over the inclined ends ofthe loop forming members 12 and then moves both weft shots frontwardlytowards the fell of the cloth onthe beat up, thereby producing in theupper weft shots loops in the weft, as indicated at 20, Fig. 4.

Referring to Fig. 2, the lay is shown by dotted lines in itssubstantially'full back position with the upper weft shot d between theends of the loop forming members and the reed, also shown in dottedlines, while the lower weft shote is below the plane of the stufierwarps c and consequently below the plane of the lower edges of the loopforming members. As the lay moves frontwardly on the beat up and beforeit completes its frontward movement the reed 3 acts upon the upper weftshot d to first move it over the inclined end portion of the loopforming members 12 and then moves both weft shots frontwardly with thebeat up, the rear end portions of the loop forming members at such timespass between the dents of the reed.- As the loops of the upper weft shotmove frontwardly under the action of the reed, the lower weft shot 0 islikewise moved frontwardly, a condition best indicated in Fig. 3, and asthe two weft shots are heat up by the reed the loops of the precedingu1per weft shot, as indicated at 22, Fig. 3, are bound in the fabricwhile the third loop of the upper weft shot, as indicated at 23, isforced upon a cutter 21 secured in the upper portion of each of -theloop forming members, with the result that the loops in the upper weftshot are gift and present the condition as indicated in What is' claimedis: i

1. In a loom for weaving weft pile fabrics, the

combination of the lay having a reed, shedding mechanism for forming anupper and a lower shed separated by a stufferwarp, a series of fixedweft loop forming members secured at the front of the loom and havingtheir free ends extending towards the reed when in its back position,and mechanism for introducing simultaneously a weft shot in each shedthat on the beat up the weft shot in the upper shed may be moved overthe ends of the loop forming members to produce pile forming loop in theupper weft shot.

2. In a loom for weaving weft pile fabrics, the combination of sheddingmechanism for dividing the warp into an upper and a lower shed separatedby a dead stufier warp, a series of weft loop forming members secured atthe front of the loom and having their rear ends held in fixed positionfrontward of the shedding mechanism, needle mechanism for introducing aweft shot in both sheds, and a lay having a reed for forcing the upperweft shot over the ends of the 'loop forming members to form loops inthe upper weft shot on the beat up.

3. In a loom for weaving weft pile fabrics, the combination of the layhaving a reed, shedding mechanism for forming an upper and a lower shedseparated by a stuffer warp, a series of fixed weft loop forming memberssecured at the front of the loom and having their free ends downwardlybevelled extending towards the reed when in its back position, andmechanism for introducing a weft shot in each shed that on the beat upthe weft shot in the upper shed may be moved over the ends of the loopforming members to produce pile forming loop in the upper weft shot.

4. In a loom for weaving weft pile fabrics, the combination of a breastplate over which the fabric passes as it is woven, a cross bar mountedon the loom frame above the breast plate, a series of weft loop formingmembers secured in fixed position and having their free ends extendingrearward of the breast plate, means for dividing the warp threads intoupper and lower sheds, needle mechanism for introducing simultaneously ashot of weft in each shed, a lay having a reed to first move the upperweft shot over, the end of the loop forming members, and second,

1 complete the beat'up of both weft shots with the upper weft shotforming weft loops over the top of the loop forming members.

5. In a loom for weaving weft pile fabrics, the combination of the layhaving a reed, shedding mechanism for dividing the warp threads into anupper and lower shed with a stuffer warp between the two sheds, a seriesof stationary weft loop forming members secured at the front of the loomand having their rear ends extending towards and terminating in front ofthe reed when in its-back position and needle mechanism for introducingsimultaneously a weft shot in eachshed that the reed may move both shotstowards the fell of the cloth and the upper weft shot over the ends ofthe loop forming members on the beat up and form weft pile loops.

6. In a loom for weaving weft pile fabrics, the combination of the layhaving a reed, shedding mechanism for dividing the warp threads into anupper and a lower shed, a series of weft loop 1 forming membersextending from the front of the loom and having downwardly bevelled endslocated in fixed position in the upper shed when the sheds are openedand terminating in front of the reed when it is in its rear position, aneedle 1 mechanism for introducing a weft shot in the upper shed betweenthe reed and the ends of the weft loop forming members and forsimultaneously introducing a weft shot in the lower shed that on thebeat up the reed may force the upper weft shot over the ends of the loopforming members to form weft loops in the upper weft shot.

'7. In a loom for weaving weft pile fabrics, the combination of the layhaving a reed, shedding mechanism for dividing the warp threads into anupper and a lower shed, a series of loop forming members extending fromthe front of the loom and having downwardly bevelled ends located infixed position in the upper shed when the sheds are openedandterminating in front of the reed when it is in its rear position, aneedle mechanism for introducing a weft shot in the upper shed betweenthe reed and the ends of the weft loop forming members and forsimultaneously introducing a weft shot in the lower shed that on thebeat up the reed may force the upper weft shot over the ends of the loopforming members to form weft loops in the upper weft shot and a loopcutter at the front portion of the loop forming members.

8. In a loom for weaving weft pile fabrics, the combination of the layhaving a reed, shedding mechanism for dividing the warp' threads into anupper and a lower shed, separated by a dead stuffer warp, a series ofweft loop forming members extending from the front. of the loom withtheir lower longitudinal edges in the plane of the stulfer warps, andhaving downwardly bevshed that on the beat up the reed may force theupper weft shot over the ends of the loop forming members toform weftloops in the upper weft shot.

9. In a loom for weaving weft pile fabrics, the combination of sheddingmechanism, the lay having a reed, a series of fixed weft loop formingmembers secured at the front of the loom and having the ends of the weftloop forming members between the front of the loom and the reed when inrearward position, and means for introducing a weft shot in the shedbetween the reed and the free ends of the weft loop forming members thatthe reed may force the weft shot over the free ends of the weft loopforming members and form loops in the weft shot on the beat up.

WELLESLEY B. COOPER. ERNEST THEODORE PHOENIX.

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